Nowadays, you'll need to order a Frosty and your soda separately. You can request that your Frosty cup only be filled halfway, topping it up with your beverage of choice at a Wendy's Coca-Cola ...

Once you order your two ingredients, a large soda, and any Frosty flavor, use a spoon to transfer the malted dairy treat into the soda itself. It's probably best to take a few sips of the soda ...